The “Full House” starlet showed up at the Louis Vuitton runway presentation and attracted all kinds of attention thanks to the left-hand sparkler given to her by French banker Olivier Sarkozy, who is 17 years her senior.

Mary-Kate and Olivier are rumored to have gotten engaged while vacationing in the Caribbean last month, though neither of them have confirmed the betrothal.

Olsen lives with Sarkozy in a $6.25 million townhouse in Manhattan’s Lower East Side. They’ve been dating since May 2012.

Enjoy the pictures of Mary Kate Olsen arriving for the Louis Vuitton show during Paris Fashion Week (March 5).